Martensitic transformation and soft modes in KAlF4
- 1 February 1989
- journal article
- research article
- Published by Taylor & Francis in Phase Transitions
- Vol. 14 (1) , 47-53
- https://doi.org/10.1080/01411598908208080
Abstract
The structural phase transition observed at −13°C in KAlF4 is shown to be martensitic. The results of an investigation of the phonon spectrum by inelastic neutron scattering are reported. It is shown that the transition is preceded by the softening of a flat phonon branch. A model is proposed to explain how such a softening is related to the martensitic transition.Keywords
This publication has 4 references indexed in Scilit:
- Temperature behaviour of the tetrafluoroaluminates K1−xRbxAlF4. Evolution of the shear structural phase transitionSolid State Communications, 1987
- A premartensitic phase in KAlF4: neutron and X-ray scattering evidencesJournal de Physique, 1987
- X-ray mono-Laue investigations of KAlF4 and RbAlF4 : analysis of the displacive and martensitic transformationsJournal de Physique, 1987
- Shear transformation in the layered compound KAlF4 : low temperature phase structure and transformation mechanismJournal de Physique, 1985